Diagnostic Aids
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
- Prior to replacing a BCM, ensure that all of the diagnostics have been completed. Refer to Figure.
- Inspect the Passlock™ sensor harness for intermittent or poor connections. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS in Wiring Systems.